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/*
**************************************************************************
description
--------------------
copyright : (C) 2000-2001 by Andreas Zehender
email : zehender@kde.org
**************************************************************************
**************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
**************************************************************************/
#include "pmaddcommand.h"
#include "pmcommandmanager.h"
#include "pmpart.h"
#include "pmdeclare.h"
#include "pmerrorflags.h"
#include "pmrecursiveobjectiterator.h"
#include "pmmemento.h"
#include <klocale.h>
PMAddCommand::PMAddCommand( PMObject* obj, PMObject* parent, PMObject* after )
: PMCommand( i18n( "Add New %1" ).tqarg( obj->description( ) ) )
{
m_objects.append( obj );
m_pParent = parent;
m_pAfter = after;
m_executed = false;
m_firstExecution = true;
m_linksCreated = false;
m_pParentChangeMemento = 0;
}
PMAddCommand::PMAddCommand( const PMObjectList& list, PMObject* parent,
PMObject* after )
: PMCommand( i18n( "Add Objects" ) )
{
m_objects = list;
m_pParent = parent;
m_pAfter = after;
m_executed = false;
m_firstExecution = true;
m_linksCreated = false;
m_pParentChangeMemento = 0;
}
PMAddCommand::~PMAddCommand( )
{
if( !m_executed )
{
m_objects.setAutoDelete( true );
m_objects.clear( );
}
m_insertErrors.setAutoDelete( true );
m_insertErrors.clear( );
}
void PMAddCommand::execute( PMCommandManager* theManager )
{
if( !m_executed )
{
PMObjectListIterator it( m_objects );
PMObject* prev = m_pAfter;
PMObjectList errors;
PMObject* current;
bool error = false;
if( m_firstExecution )
if( m_pParent->dataChangeOnInsertRemove( ) )
m_pParent->createMemento( );
for( ; it.current( ); ++it )
{
current = it.current( );
if( !prev )
{
if( m_pParent->canInsert( current, 0 ) )
{
m_pParent->insertChild( current, 0 );
prev = current;
theManager->cmdObjectChanged( current, PMCAdd );
}
else
error = true;
}
else
{
if( m_pParent->canInsert( current, prev ) )
{
m_pParent->insertChildAfter( current, prev );
prev = current;
theManager->cmdObjectChanged( current, PMCAdd );
}
else
error = true;
}
if( error )
{
errors.append( current );
theManager->cmdObjectChanged( current, PMCAdd | PMCInsertError );
if( current->isA( "Declare" ) )
{
// the object, that couldn't be inserted was a declare,
// remove all links
PMObjectListIterator links =
( ( PMDeclare* ) current )->linkedObjects( );
for( ; links.current( ); ++links )
{
PMObject* l = links.current( );
if( l->parent( ) )
l->parent( )->takeChild( l );
else
m_objects.removeRef( l );
m_insertErrors.append( l );
}
}
if( current->linkedObject( ) )
current->linkedObject( )->removeLinkedObject( current );
error = false;
}
}
if( m_pParent->mementoCreated( ) )
m_pParentChangeMemento = m_pParent->takeMemento( );
if( m_pParentChangeMemento )
{
PMObjectChangeListIterator c = m_pParentChangeMemento->changedObjects( );
for( ; c.current( ); ++c )
theManager->cmdObjectChanged( c.current( )->object( ),
c.current( )->mode( ) );
}
if( m_linksCreated )
{
PMObjectListIterator rit( m_links );
for( ; rit.current( ); ++rit )
rit.current( )->linkedObject( )->addLinkedObject( rit.current( ) );
PMObjectListIterator dit( m_linkedDeclares );
for( ; dit.current( ); ++dit )
theManager->cmdObjectChanged( dit.current( ), PMCData );
}
PMObjectListIterator errorit( errors );
for( ; errorit.current( ); ++errorit )
{
m_objects.removeRef( errorit.current( ) );
m_insertErrors.append( errorit.current( ) );
PMRecursiveObjectIterator lit( errorit.current( ) );
for( ; lit.current( ); ++lit )
if( lit.current( )->linkedObject( ) )
lit.current( )->linkedObject( )->removeLinkedObject( lit.current( ) );
}
m_executed = true;
m_firstExecution = false;
}
}
void PMAddCommand::undo( PMCommandManager* theManager )
{
if( m_executed )
{
PMObjectListIterator it( m_objects );
PMObject* obj;
PMDeclare* decl;
if( !m_linksCreated )
{
for( ; it.current( ); ++it )
{
PMRecursiveObjectIterator lit( it.current( ) );
for( ; lit.current( ); ++lit )
{
decl = lit.current( )->linkedObject( );
if( decl )
{
m_links.append( lit.current( ) );
if( !m_linkedDeclares.containsRef( decl ) )
m_linkedDeclares.append( decl );
}
}
}
m_linksCreated = true;
}
PMObjectListIterator rit( m_links );
for( ; rit.current( ); ++rit )
rit.current( )->linkedObject( )->removeLinkedObject( rit.current( ) );
for( it.toLast( ) ; it.current( ); --it )
{
obj = it.current( );
// signal has to be emitted before the item is removed
theManager->cmdObjectChanged( obj, PMCRemove );
if( obj->parent( ) )
obj->parent( )->takeChild( obj );
}
if( m_pParentChangeMemento )
{
m_pParent->restoreMemento( m_pParentChangeMemento );
PMObjectChangeListIterator c = m_pParentChangeMemento->changedObjects( );
for( ; c.current( ); ++c )
{
theManager->cmdObjectChanged( c.current( )->object( ),
c.current( )->mode( ) );
}
}
PMObjectListIterator dit( m_linkedDeclares );
for( ; dit.current( ); ++dit )
theManager->cmdObjectChanged( dit.current( ), PMCData );
m_executed = false;
}
}
int PMAddCommand::errorFlags( PMPart* )
{
return PMENone;
}
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